public class Request
{
    int track;
    int sector;
    
    public Request(int t, int s)
    {
        track = t;
        sector =s;        
    }
    
    @Override
    public boolean equals(Object o)
    {
        Request r = (Request) o;
        return r.track==this.track && r.sector == this.sector;
    }
    
    public String toString()
    {
        return track+" "+sector;    
    }
}